--- a/gfx/2d/Logging.h
+++ b/gfx/2d/Logging.h
@@ -125,16 +125,17 @@ enum class LogReason : int {
   InvalidCommandList,
   AsyncTransactionTimeout, // 30
   TextureCreation,
   InvalidCacheSurface,
   AlphaWithBasicClient,
   UnbalancedClipStack,
   ProcessingError,
   InvalidDrawTarget,
+  NativeFontResourceNotFound,
   // End
   MustBeLessThanThis = 101,
 };
 
 struct BasicLogger
 {
   // For efficiency, this method exists and copies the logic of the
   // OutputMessage below.  If making any changes here, also make it

--- a/gfx/2d/RecordedEvent.cpp
+++ b/gfx/2d/RecordedEvent.cpp
@@ -1639,16 +1639,22 @@ RecordedFontDescriptor::RecordedFontDesc
   mData.resize(size);
   aStream.read((char*)&mData[0], size);
 }
 
 bool
 RecordedScaledFontCreation::PlayEvent(Translator *aTranslator) const
 {
   NativeFontResource *fontResource = aTranslator->LookupNativeFontResource(mFontDataKey);
+  if (!fontResource) {
+    gfxDevCrash(LogReason::NativeFontResourceNotFound) <<
+      "NativeFontResource lookup failed for key |" << hexa(mFontDataKey) << "|.";
+    return false;
+  }
+
   RefPtr<ScaledFont> scaledFont = fontResource->CreateScaledFont(mIndex, mGlyphSize);
   aTranslator->AddScaledFont(mRefPtr, scaledFont);
   return true;
 }
 
 void
 RecordedScaledFontCreation::RecordToStream(std::ostream &aStream) const
 {